Good evening,
I create a three tier ASP.NET web application. How can I validate the
form input data in the Business Logic Layer? Can anyone give me an
example? 3 1726
Hello Student,
Why not to use ASP.net validators for this?
S> Good evening,
S> I create a three tier ASP.NET web application. How can I validate the
S> form input data in the Business Logic Layer? Can anyone give me an
S> example?
S>
---
WBR,
Michael Nemtsev :: blog: http://spaces.msn.com/laflour
"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche
Student wrote: Good evening,
I create a three tier ASP.NET web application. How can I validate the form input data in the Business Logic Layer? Can anyone give me an example?
Well, what I do, is in the submit method, you could take the values of
your form, and run them through your validation methods. If the
validation returns false, then don't do a Server.Transfer to the next
page, put the user back on form where the problem is
private void bookingSubmit_C lick(object sender, System.EventArg s e)
{
if(this.validat eForm())
{
//data is ok; proceed
Server.Transfer ("nextpage.aspx ");
}
}
//this method could be in the "business logic layer"
bool validateForm()
{
if(this.FirstNa me.Length==0)
return false;
//... and so on
}
Validation is one area where you cannot do all validation in one place.
Sometimes you need to validate on the page, sometimes in the server
code, in the business object and again in the data services area. I try
and at least have all validation done in the business object so there
is one place where the validation rules exist but you will have to
duplicate validation in other areas too. For example you may check that
you got a particular value. You may wish to check this on the page so
the user gets immediate response but by the time it hits the business
object you want to validate it again because you may be unsure where
the data came from (and hence has it been validated) and also people
can post to your website without going through your pages so if it
assumes something has been already checked you may open yourself up for
attacks. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: nospam |
last post by:
Reasons for a 3-tier achitecture for the WEB?
(NOTE: I said, WEB, NOT WINDOWS.
DON'T shoot your mouth off if you don't understand the difference.)
I hear only one reason and that's to switch a database from SQL Server to
Oracle or DB2 or vice versa... and that's it.... And a lot of these
enterprises don't need it as they already know what database they are going
to use and they don't plan on switching in and out database in the first...
|
by: David Noble |
last post by:
We've been developing a web site using 3-tier architecture for 18
months now.
There is a common layer that defines the classes - using XML schemas.
The data layer acts as a wrapper to 3 databases - SQL Server, Oracle
and AS400.
The business layer exposes web services which communicate with the
front end, ASP.Net. All 3 tiers are on different boxes. This works
well.
Now I am leading a team to build a winforms app. I need some advice as
|
by: RAJESH |
last post by:
I am working with c# and asp.net in developing web applications, iam using
..netframework 1.1 ,i want to know what is the need of 3-tier or 4-tier
architecture in our application development.what is its part when some body
is using our application.plese give links where i can find the answer.
|
by: Adam White |
last post by:
The company I work for used to create web applications using an ASP
user interface, VB6 COM+ middle-tier with a SQL2K back-end. They have
recently moved on to .NET with ASP.NET user interfaces and a C# COM+
middle-tier. The .NET applications are being installed on the same
servers as the old applications and they are also using some of the
same VB6 COM+ objects (via Interop).
The problems we are having are as follows:
1) The web...
|
by: Charles Law |
last post by:
This is a sort of pattern question, but relating to how components are
coupled in a three-tier system.
I have a presentation layer, business layer and data access layer, the first
is the EXE, whilst the other two are implemented as DLLs. The EXE also
references a DLL that contains various user controls, one of which is based
on a grid control.
The coupling is currently like this:
| |
by: crprajan3529 |
last post by:
The following is the complete code snippet written in c# for a windows application which connects to a sql server database and it also contains code for loading the records and navigation of records. What i need is I need to implement the same using a three tier architecture. How to do it?
I do not three tier architecture. Can anybody please modify the below code according to the three tier architecture.
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
| |
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| |